Aboard ship or in an approved simulator, given access to an oily water separator system and proper tools and equipment.

Performance requirement

Behavior Standard
The student will: During assessment, the student shall, at a minimum:

Identify and Describe the visible components of the ows.

Identify and describe at least the following:

  • suction line
  • discharge line
  • flushing line
  • slop tank
  • pump
  • solenoid valves
  • relief valve
  • control panel
  • instrumentation
  • operating pressure
  • waste oil discharge
  • oil level probe

Trace the suction and discharge of the OWS.

Trace system for current operating condition

Monitor the OWS.

Monitor OWS for at least one hour

Check bilge level

Maintain OWS log

Apply regulations to the operation of the OWS

Know permissible oil content for discharge

Fill out sample Oil Record Book


Assessed in EN‑2231 Sea Term II: Marine Engineering.


  1. Table A-III/1 OICEW-A5.3
  2. NVIC 17-14 Task 5.3.A

See the Assessment Guidelines for additional specifications of behavior and standards.